TY - JOUR
T1 - Transport of ground-state hydrogen atoms in a plasma expansion
AU - Mazouffre, S.
AU - Boogaarts, M.G.H.
AU - Bakker, I.S.J.
AU - Vankan, P.J.W.
AU - Engeln, R.A.H.
AU - Schram, D.C.
PY - 2001
Y1 - 2001
N2 - The transport of ground-state atomic hydrogen in the expansion of a thermal plasma generated from an Ar-H/sub 2/ mixture is studied by means of laser-based diagnostic techniques. The flow of hydrogen atoms is investigated by two-photon excitation laser-induced fluorescence (LIF), whereas Ar atoms are probed by LIF as well as by UV Rayleigh scattering. The transport of Ar atoms can be fully understood in terms of a free jet flow; H atoms on the contrary exhibit an anomalous behavior. In the course of the plasma expansion, hydrogen atoms decouple from the argon fluid by a diffusion process as a direct consequence of recombination of H atoms at the vessel walls. In this contribution it is shown, on the basis of experimental results, how plasma-surface interactions can strongly influence the flow pattern of an atomic radical fluid. ©2001 The American Physical Society
AB - The transport of ground-state atomic hydrogen in the expansion of a thermal plasma generated from an Ar-H/sub 2/ mixture is studied by means of laser-based diagnostic techniques. The flow of hydrogen atoms is investigated by two-photon excitation laser-induced fluorescence (LIF), whereas Ar atoms are probed by LIF as well as by UV Rayleigh scattering. The transport of Ar atoms can be fully understood in terms of a free jet flow; H atoms on the contrary exhibit an anomalous behavior. In the course of the plasma expansion, hydrogen atoms decouple from the argon fluid by a diffusion process as a direct consequence of recombination of H atoms at the vessel walls. In this contribution it is shown, on the basis of experimental results, how plasma-surface interactions can strongly influence the flow pattern of an atomic radical fluid. ©2001 The American Physical Society
U2 - 10.1103/PhysRevE.64.016411
DO - 10.1103/PhysRevE.64.016411
M3 - Article
C2 - 11461414
SN - 1539-3755
VL - 64
SP - 016411-1/11
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 1
ER -